LM4041D12IDCKR

Overview

The LM4041D12IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 1.225 V with an initial accuracy tolerance of ±1%. The device operates within a supply voltage range up to 15 V and supports a maximum shunt current of 12 mA, with a minimum operating current of 60 µA. It features a temperature coefficient of 150 ppm/°C and functions reliably across an extended industrial temperature range from -40°C to +125°C. The component is housed in a compact SC-70-5 surface-mount package.

Feature Summary

• Provides stable reference voltage without requiring external capacitors for stability
• Maintains low dynamic impedance and low noise performance across wide current ranges
• Operates stably with all capacitive loads due to internal compensation design

Applications

• Data acquisition systems requiring precise voltage references
• Portable battery-powered equipment needing low quiescent current
• Process control instrumentation and test equipment
• Power supply monitoring circuits

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-5 package and reel packaging configuration. Confirm the D-grade accuracy class matches the required ±1% tolerance for the application. Ensure the extended temperature rating of +125°C aligns with thermal constraints. Cross-reference the manufacturer part number against official datasheets to confirm RoHS compliance and lead-free status before procurement.

Selection Notes

Select this component when a fixed 1.225 V reference is needed in space-constrained designs. The SC-70-5 package offers a small footprint suitable for dense PCB layouts. Choose this variant over adjustable versions if a fixed reference eliminates the need for external resistors. Consider the 150 ppm/°C temperature coefficient when evaluating long-term drift requirements in varying thermal environments.

Part Context

This device belongs to the LM4041 family of precision shunt voltage references. The family includes adjustable variants and different accuracy grades (A, B, C, D). The LM4041 series is designed for applications requiring high stability and low power consumption. It utilizes Zener-zap trimming technology during manufacturing to achieve specified voltage tolerances and temperature coefficients.

Replacement Considerations

• LM4041D12IDCKRG4

FAQ

Does the LM4041D12IDCKR require an output capacitor for stability?

No, the device is internally compensated and remains stable with all capacitive loads without requiring an external output capacitor.

What is the maximum supply voltage for this component?

The maximum supply voltage (Vsup) for the LM4041D12IDCKR is 15 V.